Packard.] 
84 
["May 7, 
be called the sole or planta, a terra by some erroneously applied 
to the individual hooks.) 
Reaumur then states that a number of species (not enumerated) 
have abdominal legs ending either in a complete or nearly com- 
plete crown of crochets, but such legs are not capable of swelling 
out or of contracting like those of most caterpillars; they live in 
rolled leaves, in the stems of plants, or in fruits. He figures two 
peculiar feet (PI. hi, figs. 12 and 13), which form a third type. 
They are very slender and long, alwa} T s well extended, and look 
like the legs of a stool, ending in a thin button-like expansion en- 
tirely surrounded by hooks, with a central papilla or sole. Wheth- 
er later French observers or commentators have identified the gen- 
era and species of caterpillars possessing the three types of feet de- 
scribed and figured by Reaumur (r, p. 118), we do not know. It 
was disappointing to find that Goosens 1 in his paper had not al- 
luded to the important differences in the structure and armature of 
the abdominal foot ; nor, so far as we are aware, has any other au- 
thor called attention to the subject. 
In the majority of the larvae of the Macrolepidoptera, the ab- 
dominal legs belong to Reaumur’s first class : the leg changing its 
shape by dilating or contracting the planta and the crochets form- 
ing a semicircle, single or partly double, and situated on the inside 
of the sole of the membranous leg. 
I have examined them in the mature larvae of different genera of 
each group of Bombyces (except the Psychidae and Cocldidiae) in- 
cluding Clisiocampa, Eacles, Hyperchiria, Hemileuca, Pseudohazis, 
Platysamia, Telea, Bombyx mori , Drepana, different genera of No- 
todontians, Liparidae, Arctiidae, Lithosians ; also in Zygaenidae, 
Agaristidae and Sphingidae. 
In the Hepialidae and Cossidae, the crochets form a complete cir- 
cle in the middle abdominal legs, while the anal legs are as in other 
groups. I have examined them in well-preserved alcoholic speci- 
mens of the European Cossus ligniperda and Zeuzera cesculi , kindly 
presented to me by Professor Targione-Tozzetti of Florence. These 
are an example of Reaumur’s second class. The extremity of the 
feet in question, with different views of the crochets are admirably 
figured in Lyonnet’s great work “Traite anatomique de la Chenille,” 
1762, Planche m, figs. 10-16. 
ALes pattes des Cheuilles. Ann. Soc. Ent. France, 6e Ser., vii, 385-404, 1887. 
